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1
50
51 package com.lowagie.text.pdf;
52
53 import java.text.SimpleDateFormat  ;
54 import java.util.Calendar ;
55 import java.util.GregorianCalendar ;
56 import java.util.SimpleTimeZone ;
57
58
73
74 public class PdfDate extends PdfString {
75
76 private static final int DATE_SPACE[] = {Calendar.YEAR, 4, 0, Calendar.MONTH, 2, -1, Calendar.DAY_OF_MONTH, 2, 0,
77 Calendar.HOUR_OF_DAY, 2, 0, Calendar.MINUTE, 2, 0, Calendar.SECOND, 2, 0};
78
79
81
86
87 public PdfDate(Calendar d) {
88 super();
89 StringBuffer date = new StringBuffer ("D:");
90 date.append(setLength(d.get(Calendar.YEAR), 4));
91 date.append(setLength(d.get(Calendar.MONTH) + 1, 2));
92 date.append(setLength(d.get(Calendar.DATE), 2));
93 date.append(setLength(d.get(Calendar.HOUR_OF_DAY), 2));
94 date.append(setLength(d.get(Calendar.MINUTE), 2));
95 date.append(setLength(d.get(Calendar.SECOND), 2));
96 int timezone = (d.get(Calendar.ZONE_OFFSET) + d.get(Calendar.DST_OFFSET)) / (60 * 60 * 1000);
97 if (timezone == 0) {
98 date.append('Z');
99 }
100 else if (timezone < 0) {
101 date.append('-');
102 timezone = -timezone;
103 }
104 else {
105 date.append('+');
106 }
107 if (timezone != 0) {
108 date.append(setLength(timezone, 2)).append('\'');
109 int zone = Math.abs((d.get(Calendar.ZONE_OFFSET) + d.get(Calendar.DST_OFFSET)) / (60 * 1000)) - (timezone * 60);
110 date.append(setLength(zone, 2)).append('\'');
111 }
112 value = date.toString();
113 }
114
115
118
119 public PdfDate() {
120 this(new GregorianCalendar ());
121 }
122
123
131
132 private String setLength(int i, int length) { StringBuffer tmp = new StringBuffer ();
134 tmp.append(i);
135 while (tmp.length() < length) {
136 tmp.insert(0, "0");
137 }
138 tmp.setLength(length);
139 return tmp.toString();
140 }
141
142
146 public String getW3CDate() {
147 return getW3CDate(value);
148 }
149
150
155 public static String getW3CDate(String d) {
156 SimpleDateFormat w3c = new SimpleDateFormat ("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
157 Calendar c = decode(d);
158 return w3c.format(c.getTime());
159 }
160
161
167 public static Calendar decode(String s) {
168 try {
169 if (s.startsWith("D:"))
170 s = s.substring(2);
171 GregorianCalendar calendar;
172 int slen = s.length();
173 int idx = s.indexOf('Z');
174 if (idx >= 0) {
175 slen = idx;
176 calendar = new GregorianCalendar (new SimpleTimeZone (0, "ZPDF"));
177 }
178 else {
179 int sign = 1;
180 idx = s.indexOf('+');
181 if (idx < 0) {
182 idx = s.indexOf('-');
183 if (idx >= 0)
184 sign = -1;
185 }
186 if (idx < 0)
187 calendar = new GregorianCalendar ();
188 else {
189 int offset = Integer.parseInt(s.substring(idx + 1, idx + 3)) * 60;
190 if (idx + 5 < s.length())
191 offset += Integer.parseInt(s.substring(idx + 4, idx + 6));
192 calendar = new GregorianCalendar (new SimpleTimeZone (offset * sign * 60000, "ZPDF"));
193 slen = idx;
194 }
195 }
196 calendar.clear();
197 idx = 0;
198 for (int k = 0; k < DATE_SPACE.length; k += 3) {
199 if (idx >= slen)
200 break;
201 calendar.set(DATE_SPACE[k], Integer.parseInt(s.substring(idx, idx + DATE_SPACE[k + 1])) + DATE_SPACE[k + 2]);
202 idx += DATE_SPACE[k + 1];
203 }
204 return calendar;
205 }
206 catch (Exception e) {
207 return null;
208 }
209 }
210 } |
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